David Blehert and His Research Team Captured 117 Healthy Bats

David Blehert and his research team captured 117 healthy bats to study in the laboratory and divided them into 4 groups.Group 1 was housed in an area free from Geomyces destructans.Group 2 was housed in an area that shared the same air as bats infected with WNS,but they did not have direct contact with the infected bats.Group 3 was housed in direct contact with other bats infected with WNS.Group 4 was directly exposed to Geomyces destructans when it was applied to their wings.During the study period the bats were monitored for signs of WNS.What were the independent and dependent variables in this experiment?

A) The independent variable was the type of exposure to Geomyces destructans.The dependent variable was whether or not the bats became sick with WNS.
B) The independent variable was whether or not the bats became sick with WNS.The dependent variable was the type of exposure to Geomyces destructans.
C) The independent variable was whether or not the bats became sick with WNS.The dependent variable was the number of bats included in the study.
D) The independent variable was the number of bats included in the study.The dependent variable was the type of exposure to Geomyces destructans.